Receiving billing and shipping details during checkout and sending the final quote and payment terms (Node.js)
In this use case, the user provides all the details required by the delivery agency to calculate the final payable amount and receives the final delivery invoice containing the terms of payment against the final details of delivery
Code snippets
BPP receives protocol init
/*
Example Request JSON:
{
"context": {
"domain": "delivery",
"country": "IND",
"city": "std:080",
"action": "init",
"core_version": "0.9.2",
"bap_id": "https://mock_bap.com/",
"bap_uri": "https://mock_bap.com/beckn/",
"transaction_id": "1239890342",
"message_id": "123793824",
"timestamp": "2021-03-23T10:00:40.065Z"
},
"message": {
"order": {
"items": [
{
"id": "standard",
"quantity": {
"count": 1
}
}
],
"billing": {
"name": "John Doe",
"address": {
"door": "21A",
"name": "ABC Apartments",
"locality": "HSR Layout",
"city": "Bengaluru",
"state": "Karnataka",
"country": "India",
"area_code": "560102"
},
"email": "[email protected]",
"phone": "+919876543210",
"created_at": "2021-06-15T07:08:36.211Z",
"updated_at": "2021-06-15T07:08:36.211Z"
},
"fulfillment": {
"type": "home-delivery",
"tracking": false,
"start": {
"location": {
"gps": "12.9349377,77.6055586"
},
"time": {
"range": {
"start": "2021-06-15T07:09:30.000Z",
"end": "2021-06-15T07:10:30.000Z"
}
},
"instructions": {
"name": "pick up instructions",
"short_desc": "Don't ring door bell"
},
"contact": {
"phone": "+919999999999",
"email": "[email protected]"
}
},
"end": {
"location": {
"gps": "12.914028, 77.638698",
"address": {
"door": "21A",
"name": "ABC Apartments",
"locality": "HSR Layout",
"city": "Bengaluru",
"state": "Karnataka",
"country": "India",
"area_code": "560102"
}
},
"time": {
"range": {
"start": "2021-06-15T07:11:36.212Z",
"end": "2021-06-15T07:12:36.212Z"
}
},
"instructions": {
"name": "drop off instructions",
"short_desc": "Leave at door step"
},
"contact": {
"phone": "+919876543210",
"email": "[email protected]"
}
}
}
}
}
}
*/
// Auth middleware authenticates the digital signature of the incoming request
router.post('/delivery/init', auth, init);
function init({ headers, body }, res) {
try {
const message = _.get(body, "message");
const context = _.get(body, "context");
if (!context) {
return res.status(400).send(httpResponse("NACK", "Missing Context"));
}
if (!message) {
return res.status(400).send(httpResponse("NACK", "Missing Message"));
}
// ... Returns the ack immediately and continue the processing after validation
res.status(200).send(httpResponse("ACK"));
processInit(headers, body)
} catch (error) {
res.status(500).send(httpResponse("NACK", error));
}
};BPP processes the init
function processInit(requestHeaders, initRequestBody) {
// Execute business logic here
let initResponse = {}
generateResponse(requestHeaders, initResponse)
}BPP generates response
async function generateResponse(requestHeaders, rawResponse){
/*
Example Request JSON :
{
"context": {
"domain": "delivery",
"country": "IND",
"city": "std:080",
"action": "on_init",
"core_version": "0.9.2",
"bap_id": "https://mock_bap.com/",
"bap_uri": "https://mock_bap.com/beckn/",
"transaction_id": "1239890342",
"message_id": "123793824",
"timestamp": "2021-06-23T07:14:40.928Z"
},
"message": {
"order": {
"items": [
{
"id": "standard",
"quantity": {
"count": 1
}
}
],
"billing": {
"name": "John Doe",
"address": {
"door": "21A",
"name": "ABC Apartments",
"locality": "HSR Layout",
"city": "Bengaluru",
"state": "Karnataka",
"country": "India",
"area_code": "560102"
},
"email": "[email protected]",
"phone": "+919876543210",
"created_at": "2021-06-15T07:08:36.211Z",
"updated_at": "2021-06-15T07:08:36.211Z"
},
"fulfillment": {
"type": "home-delivery",
"tracking": false,
"start": {
"location": {
"gps": "12.9349377,77.6055586"
},
"time": {
"range": {
"start": "2021-06-15T07:09:30.000Z",
"end": "2021-06-15T07:10:30.000Z"
}
},
"instructions": {
"name": "pick up instructions",
"short_desc": "Don't ring doorbell"
},
"contact": {
"phone": "+919999999999",
"email": "[email protected]"
}
},
"end": {
"location": {
"gps": "12.914028, 77.638698",
"address": {
"door": "21A",
"name": "ABC Apartments",
"locality": "HSR Layout",
"city": "Bengaluru",
"state": "Karnataka",
"country": "India",
"area_code": "560102"
}
},
"time": {
"range": {
"start": "2021-06-15T07:11:36.212Z",
"end": "2021-06-15T07:12:36.212Z"
}
},
"instructions": {
"name": "drop off instructions",
"short_desc": "Leave at door step"
},
"contact": {
"phone": "+919876543210",
"email": "[email protected]"
}
}
},
"quote": {
"price": {
"currency": "INR",
"value": "40"
},
"breakup": [
{
"title": "Standard delivery",
"price": {
"currency": "INR",
"value": "40"
}
}
],
"ttl": "P4D"
},
"payment": {
"uri": "https://api.bpp.com/pay?amt=$amount&txn_id=ksh87yriuro34iyr3p4&mode=upi&vpa=bpp@upi",
"tl_method": "http/get",
"params": {
"transaction_id": "ksh87yriuro34iyr3p4",
"amount": "40",
"mode": "upi",
"vpa": "bpp@upi"
},
"type": "ON-ORDER",
"status": "NOT-PAID"
}
}
}
}
*/
let onInitResponseBody = {
}
//call protocol on_init
await callOnInit(requestHeaders, onInitResponseBody);
}BPP calls protocol on_init
async function callOnInit(requestHeaders, onInitResponseBody) {
// Take the subscriber Id from the header and calls the registry to get the url. If already cached it need not to call again
const uri = await lookup(requestHeaders);
// Construct Header
const headers = constructAuthHeader(); // Auth Header with digital Signature
return axios({ url: `${uri}/delivery/on_init`, method: "POST", headers, data: onInitResponseBody });
}